sys/dev/disk/nata/atapi-fd.c

   1 /*-
   2  * Copyright (c) 1998 - 2006 Søren Schmidt <sos@FreeBSD.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer,
  10  *    without modification, immediately at the beginning of the file.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/dev/ata/atapi-fd.c,v 1.109 2006/03/30 05:29:57 marcel Exp $
  27  * $DragonFly: src/sys/dev/disk/nata/atapi-fd.c,v 1.4.6.1 2008/09/25 01:44:55 dillon Exp $
  28  */
  29
  30 #include <sys/param.h>
  31 #include <sys/bio.h>
  32 #include <sys/buf.h>
  33 #include <sys/bus.h>
  34 #include <sys/conf.h>
  35 #include <sys/device.h>
  36 #include <sys/devicestat.h>
  37 #include <sys/disk.h>
  38 #include <sys/endian.h>
  39 #include <sys/kernel.h>
  40 #include <sys/libkern.h>
  41 #include <sys/malloc.h>
  42 #include <sys/module.h>
  43 #include <sys/nata.h>
  44 #include <sys/systm.h>
  45
  46 #include "ata-all.h"
  47 #include "atapi-fd.h"
  48 #include "ata_if.h"
  49
  50 /* device structure */
  51 static  d_open_t        afd_open;
  52 static  d_close_t       afd_close;
  53 static  d_ioctl_t       afd_ioctl;
  54 static  d_strategy_t    afd_strategy;
  55 static struct dev_ops afd_ops = {
  56         { "afd", 118, D_DISK | D_TRACKCLOSE },
  57         .d_open =       afd_open,
  58         .d_close =      afd_close,
  59         .d_read =       physread,
  60         .d_write =      physwrite,
  61         .d_ioctl =      afd_ioctl,
  62         .d_strategy =   afd_strategy,
  63 };
  64
  65 /* prototypes */
  66 static int afd_sense(device_t);
  67 static void afd_describe(device_t);
  68 static void afd_done(struct ata_request *);
  69 static int afd_prevent_allow(device_t, int);
  70 static int afd_test_ready(device_t);
  71
  72 /* internal vars */
  73 static MALLOC_DEFINE(M_AFD, "afd_driver", "ATAPI floppy driver buffers");
  74
  75 static int
  76 afd_probe(device_t dev)
  77 {
  78     struct ata_device *atadev = device_get_softc(dev);
  79     if ((atadev->param.config & ATA_PROTO_ATAPI) &&
  80         (atadev->param.config & ATA_ATAPI_TYPE_MASK) == ATA_ATAPI_TYPE_DIRECT)
  81         return 0;
  82     else
  83         return ENXIO;
  84 }
  85
  86 static int
  87 afd_attach(device_t dev)
  88 {
  89     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
  90     struct ata_device *atadev = device_get_softc(dev);
  91     struct afd_softc *fdp;
  92     cdev_t cdev;
  93
  94     fdp = kmalloc(sizeof(struct afd_softc), M_AFD, M_WAITOK | M_ZERO);
  95     device_set_ivars(dev, fdp);
  96     ATA_SETMODE(device_get_parent(dev), dev);
  97
  98     if (afd_sense(dev)) {
  99         device_set_ivars(dev, NULL);
 100         kfree(fdp, M_AFD);
 101         return ENXIO;
 102     }
 103     atadev->flags |= ATA_D_MEDIA_CHANGED;
 104
 105     /* create the disk device */
 106     devstat_add_entry(&fdp->stats, "afd", device_get_unit(dev), DEV_BSIZE,
 107                       DEVSTAT_NO_ORDERED_TAGS, DEVSTAT_TYPE_DIRECT |
 108                       DEVSTAT_TYPE_IF_IDE, DEVSTAT_PRIORITY_WFD);
 109     cdev = disk_create(device_get_unit(dev), &fdp->disk, &afd_ops);
 110     cdev->si_drv1 = dev;
 111     if (ch->dma)
 112         cdev->si_iosize_max = ch->dma->max_iosize;
 113     else
 114         cdev->si_iosize_max = DFLTPHYS;
 115     fdp->cdev = cdev;
 116
 117     /* announce we are here */
 118     afd_describe(dev);
 119     return 0;
 120 }
 121
 122 static int
 123 afd_detach(device_t dev)
 124 {
 125     struct afd_softc *fdp = device_get_ivars(dev);
 126
 127     /* check that we have a valid device to detach */
 128     if (!device_get_ivars(dev))
 129         return ENXIO;
 130
 131     /* detroy disk from the system so we dont get any further requests */
 132     disk_invalidate(&fdp->disk);
 133     disk_destroy(&fdp->disk);
 134
 135     /* fail requests on the queue and any thats "in flight" for this device */
 136     ata_fail_requests(dev);
 137
 138     /* dont leave anything behind */
 139     /* disk_destroy() already took care of the dev_ops */
 140     devstat_remove_entry(&fdp->stats);
 141     device_set_ivars(dev, NULL);
 142     kfree(fdp, M_AFD);
 143     return 0;
 144 }
 145
 146 static void
 147 afd_shutdown(device_t dev)
 148 {
 149     struct ata_device *atadev = device_get_softc(dev);
 150
 151     if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
 152         ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0);
 153 }
 154
 155 static int
 156 afd_reinit(device_t dev)
 157 {
 158     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
 159     struct ata_device *atadev = device_get_softc(dev);
 160     struct afd_softc *fdp = device_get_ivars(dev);
 161
 162     if (((atadev->unit == ATA_MASTER) && !(ch->devices & ATA_ATAPI_MASTER)) ||
 163         ((atadev->unit == ATA_SLAVE) && !(ch->devices & ATA_ATAPI_SLAVE))) {
 164         device_set_ivars(dev, NULL);
 165         kfree(fdp, M_AFD);
 166         return 1;
 167     }
 168     ATA_SETMODE(device_get_parent(dev), dev);
 169     return 0;
 170 }
 171
 172 static int
 173 afd_open(struct dev_open_args *ap)
 174 {
 175     device_t dev = ap->a_head.a_dev->si_drv1;
 176     struct ata_device *atadev = device_get_softc(dev);
 177     struct afd_softc *fdp = device_get_ivars(dev);
 178     struct disk_info info;
 179
 180     if (!fdp)
 181         return ENXIO;
 182     if (!device_is_attached(dev))
 183         return EBUSY;
 184
 185     afd_test_ready(dev);
 186     afd_prevent_allow(dev, 1);
 187
 188     if (afd_sense(dev))
 189         device_printf(dev, "sense media type failed\n");
 190     atadev->flags &= ~ATA_D_MEDIA_CHANGED;
 191
 192     if (!fdp->mediasize)
 193         return ENXIO;
 194
 195     bzero(&info, sizeof(info));
 196     info.d_media_blksize = fdp->sectorsize;     /* mandatory */
 197     info.d_media_size = fdp->mediasize;         /* (this is in bytes) */
 198
 199     info.d_secpertrack = fdp->sectors;          /* optional */
 200     info.d_nheads = fdp->heads;
 201     info.d_ncylinders =
 202            ((fdp->mediasize/fdp->sectorsize)/fdp->sectors)/fdp->heads;
 203     info.d_secpercyl = fdp->sectors * fdp->heads;
 204
 205     disk_setdiskinfo(&fdp->disk, &info);
 206     return 0;
 207 }
 208
 209 static int
 210 afd_close(struct dev_close_args *ap)
 211 {
 212     device_t dev = ap->a_head.a_dev->si_drv1;
 213     struct afd_softc *fdp = device_get_ivars(dev);
 214
 215     if (count_dev(fdp->cdev) == 1)
 216         afd_prevent_allow(dev, 0);
 217     return 0;
 218 }
 219
 220 static int
 221 afd_ioctl(struct dev_ioctl_args *ap)
 222 {
 223     return ata_device_ioctl(ap->a_head.a_dev->si_drv1, ap->a_cmd, ap->a_data);
 224 }
 225
 226 static int
 227 afd_strategy(struct dev_strategy_args *ap)
 228 {
 229     device_t dev = ap->a_head.a_dev->si_drv1;
 230     struct bio *bp = ap->a_bio;
 231     struct buf *bbp = bp->bio_buf;
 232     struct ata_device *atadev = device_get_softc(dev);
 233     struct afd_softc *fdp = device_get_ivars(dev);
 234     struct ata_request *request;
 235     u_int32_t lba;
 236     u_int16_t count;
 237     int8_t ccb[16];
 238
 239     /* if it's a null transfer, return immediatly. */
 240     if (bbp->b_bcount == 0) {
 241         bbp->b_resid = 0;
 242         biodone(bp);
 243         return 0;
 244     }
 245
 246     /* should reject all queued entries if media have changed. */
 247     if (atadev->flags & ATA_D_MEDIA_CHANGED) {
 248         bbp->b_flags |= B_ERROR;
 249         bbp->b_error = EIO;
 250         biodone(bp);
 251         return 0;
 252     }
 253
 254     lba = bp->bio_offset / fdp->sectorsize;
 255     count = bbp->b_bcount / fdp->sectorsize;
 256     bbp->b_resid = bbp->b_bcount;
 257
 258     bzero(ccb, sizeof(ccb));
 259
 260     switch(bbp->b_cmd) {
 261     case BUF_CMD_READ:
 262         ccb[0] = ATAPI_READ_BIG;
 263         break;
 264     case BUF_CMD_WRITE:
 265         ccb[0] = ATAPI_WRITE_BIG;
 266         break;
 267     default:
 268         device_printf(dev, "unknown BUF operation\n");
 269         bbp->b_flags |= B_ERROR;
 270         bbp->b_error = EIO;
 271         biodone(bp);
 272         return 0;
 273     }
 274
 275     ccb[2] = lba >> 24;
 276     ccb[3] = lba >> 16;
 277     ccb[4] = lba >> 8;
 278     ccb[5] = lba;
 279     ccb[7] = count>>8;
 280     ccb[8] = count;
 281
 282     if (!(request = ata_alloc_request())) {
 283         bbp->b_flags |= B_ERROR;
 284         bbp->b_error = ENOMEM;
 285         biodone(bp);
 286         return 0;
 287     }
 288     request->dev = dev;
 289     request->bio = bp;
 290     bcopy(ccb, request->u.atapi.ccb,
 291           (atadev->param.config & ATA_PROTO_MASK) ==
 292           ATA_PROTO_ATAPI_12 ? 16 : 12);
 293     request->data = bbp->b_data;
 294     request->bytecount = count * fdp->sectorsize;
 295     request->transfersize = min(request->bytecount, 65534);
 296     request->timeout = (ccb[0] == ATAPI_WRITE_BIG) ? 60 : 30;
 297     request->retries = 2;
 298     request->callback = afd_done;
 299
 300     switch (bbp->b_cmd) {
 301     case BUF_CMD_READ:
 302         request->flags = (ATA_R_ATAPI | ATA_R_READ);
 303         break;
 304     case BUF_CMD_WRITE:
 305         request->flags = (ATA_R_ATAPI | ATA_R_WRITE);
 306         break;
 307     default:
 308         panic("bbp->b_cmd");
 309     }
 310     if (atadev->mode >= ATA_DMA)
 311         request->flags |= ATA_R_DMA;
 312     request->flags |= ATA_R_ORDERED;
 313     devstat_start_transaction(&fdp->stats);
 314     ata_queue_request(request);
 315     return 0;
 316 }
 317
 318 static void
 319 afd_done(struct ata_request *request)
 320 {
 321     struct afd_softc *fdp = device_get_ivars(request->dev);
 322     struct bio *bp = request->bio;
 323     struct buf *bbp = bp->bio_buf;
 324
 325     /* finish up transfer */
 326     if ((bbp->b_error = request->result))
 327         bbp->b_flags |= B_ERROR;
 328     bbp->b_resid = bbp->b_bcount - request->donecount;
 329     devstat_end_transaction_buf(&fdp->stats, bbp);
 330     biodone(bp);
 331     ata_free_request(request);
 332 }
 333
 334 static int
 335 afd_sense(device_t dev)
 336 {
 337     struct ata_device *atadev = device_get_softc(dev);
 338     struct afd_softc *fdp = device_get_ivars(dev);
 339     struct afd_capacity capacity;
 340     struct afd_capacity_big capacity_big;
 341     struct afd_capabilities capabilities;
 342     int8_t ccb1[16] = { ATAPI_READ_CAPACITY, 0, 0, 0, 0, 0, 0, 0,
 343                         0, 0, 0, 0, 0, 0, 0, 0 };
 344     int8_t ccb2[16] = { ATAPI_SERVICE_ACTION_IN, 0x10, 0, 0, 0, 0, 0, 0, 0, 0,
 345                         0, 0, 0, sizeof(struct afd_capacity_big) & 0xff, 0, 0 };
 346     int8_t ccb3[16] = { ATAPI_MODE_SENSE_BIG, 0, ATAPI_REWRITEABLE_CAP_PAGE,
 347                         0, 0, 0, 0, sizeof(struct afd_capabilities) >> 8,
 348                         sizeof(struct afd_capabilities) & 0xff,
 349                         0, 0, 0, 0, 0, 0, 0 };
 350     int timeout = 20;
 351     int error, count;
 352
 353     fdp->mediasize = 0;
 354
 355     /* wait for device to get ready */
 356     while ((error = afd_test_ready(dev)) && timeout--) {
 357         DELAY(100000);
 358     }
 359     if (error == EBUSY)
 360         return 1;
 361
 362     /* The IOMEGA Clik! doesn't support reading the cap page, fake it */
 363     if (!strncmp(atadev->param.model, "IOMEGA Clik!", 12)) {
 364         fdp->heads = 1;
 365         fdp->sectors = 2;
 366         fdp->mediasize = 39441 * 1024;
 367         fdp->sectorsize = 512;
 368         afd_test_ready(dev);
 369         return 0;
 370     }
 371
 372     /* get drive capacity */
 373     if (!ata_atapicmd(dev, ccb1, (caddr_t)&capacity,
 374                       sizeof(struct afd_capacity), ATA_R_READ, 30)) {
 375         fdp->heads = 16;
 376         fdp->sectors = 63;
 377         fdp->sectorsize = be32toh(capacity.blocksize);
 378         fdp->mediasize = (u_int64_t)be32toh(capacity.capacity)*fdp->sectorsize;
 379         afd_test_ready(dev);
 380         return 0;
 381     }
 382
 383     /* get drive capacity big */
 384     if (!ata_atapicmd(dev, ccb2, (caddr_t)&capacity_big,
 385                       sizeof(struct afd_capacity_big),
 386                       ATA_R_READ | ATA_R_QUIET, 30)) {
 387         fdp->heads = 16;
 388         fdp->sectors = 63;
 389         fdp->sectorsize = be32toh(capacity_big.blocksize);
 390         fdp->mediasize = be64toh(capacity_big.capacity)*fdp->sectorsize;
 391         afd_test_ready(dev);
 392         return 0;
 393     }
 394
 395     /* get drive capabilities, some bugridden drives needs this repeated */
 396     for (count = 0 ; count < 5 ; count++) {
 397         if (!ata_atapicmd(dev, ccb3, (caddr_t)&capabilities,
 398                           sizeof(struct afd_capabilities), ATA_R_READ, 30) &&
 399             capabilities.page_code == ATAPI_REWRITEABLE_CAP_PAGE) {
 400             fdp->heads = capabilities.heads;
 401             fdp->sectors = capabilities.sectors;
 402             fdp->sectorsize = be16toh(capabilities.sector_size);
 403             fdp->mediasize = be16toh(capabilities.cylinders) *
 404                              fdp->heads * fdp->sectors * fdp->sectorsize;
 405             if (!capabilities.medium_type)
 406                 fdp->mediasize = 0;
 407             return 0;
 408         }
 409     }
 410     return 1;
 411 }
 412
 413 static int
 414 afd_prevent_allow(device_t dev, int lock)
 415 {
 416     struct ata_device *atadev = device_get_softc(dev);
 417     int8_t ccb[16] = { ATAPI_PREVENT_ALLOW, 0, 0, 0, lock,
 418                        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
 419
 420     if (!strncmp(atadev->param.model, "IOMEGA Clik!", 12))
 421         return 0;
 422     return ata_atapicmd(dev, ccb, NULL, 0, 0, 30);
 423 }
 424
 425 static int
 426 afd_test_ready(device_t dev)
 427 {
 428     int8_t ccb[16] = { ATAPI_TEST_UNIT_READY, 0, 0, 0, 0,
 429                        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
 430
 431     return ata_atapicmd(dev, ccb, NULL, 0, 0, 30);
 432 }
 433
 434 static void
 435 afd_describe(device_t dev)
 436 {
 437     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
 438     struct ata_device *atadev = device_get_softc(dev);
 439     struct afd_softc *fdp = device_get_ivars(dev);
 440     char sizestring[16];
 441
 442     if (fdp->mediasize > 1048576 * 5)
 443         ksprintf(sizestring, "%lluMB", (unsigned long long)
 444                 (fdp->mediasize / 1048576));
 445     else if (fdp->mediasize)
 446         ksprintf(sizestring, "%lluKB", (unsigned long long)
 447                 (fdp->mediasize / 1024));
 448     else
 449         strcpy(sizestring, "(no media)");
 450
 451     device_printf(dev, "%s <%.40s %.8s> at ata%d-%s %s\n",
 452                   sizestring, atadev->param.model, atadev->param.revision,
 453                   device_get_unit(ch->dev),
 454                   (atadev->unit == ATA_MASTER) ? "master" : "slave",
 455                   ata_mode2str(atadev->mode));
 456     if (bootverbose) {
 457         device_printf(dev, "%llu sectors [%lluC/%dH/%dS]\n",
 458                       (unsigned long long)(fdp->mediasize / fdp->sectorsize),
 459                       (unsigned long long)
 460                      (fdp->mediasize/(fdp->sectorsize*fdp->sectors*fdp->heads)),
 461                       fdp->heads, fdp->sectors);
 462     }
 463 }
 464
 465 static device_method_t afd_methods[] = {
 466     /* device interface */
 467     DEVMETHOD(device_probe,     afd_probe),
 468     DEVMETHOD(device_attach,    afd_attach),
 469     DEVMETHOD(device_detach,    afd_detach),
 470     DEVMETHOD(device_shutdown,  afd_shutdown),
 471
 472     /* ATA methods */
 473     DEVMETHOD(ata_reinit,       afd_reinit),
 474
 475     { 0, 0 }
 476 };
 477
 478 static driver_t afd_driver = {
 479     "afd",
 480     afd_methods,
 481     0,
 482 };
 483
 484 static devclass_t afd_devclass;
 485
 486 DRIVER_MODULE(afd, ata, afd_driver, afd_devclass, NULL, NULL);
 487 MODULE_VERSION(afd, 1);
 488 MODULE_DEPEND(afd, ata, 1, 1, 1);